(If that's the case, we see a potential business model here: Sex-skydive tourism; mile-high for a day).

The stunt happened earlier this month north of L.A., in the skies above Taft, California, when ...

... a skydive instructor and sometime porn star named Alex Torres (a.k.a. Voodoo) and skydive school receptionist Hope Howell started doing it on a plane and then jumped out mid-coitus -- cameras rolling. (NSFW video was here but, alas, is now gone).

There was some concern in Taft after a teenage boy in the area got a hold of the video and sent it to his friends.

But now cops and the FAA say no charges will be filed, according to the website Xbiz:

The FAA concluded no federal regulations were broken ...

Torres, however, lost his job. But hey, he could have a future in nude-skydiving tourism.